For full-scale replacement of 13VT-003 and VMB-8 (VMB-14) type vacuum gauges, as well as devices produced by other manufacturers unable to collect and display data from external meters and performing direct pressure measuring with the help of connected PMT-6, PMT-4 and PMI-2 lamps on existing plants, the following retrofit kit is supplied: VTRTs (3 pcs.), VMTs (1 pc.), multi-purpose automatic vacuum control unit (BUKVA) providing data collecting from digital vacuum gauges, on screen display of measured values, and programmable interlocks.